[tbb-bugs] #30683 [Applications/Tor Browser]: Properties in dom/locales/$lang/chrome/ allow detecting user locale

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#30683: Properties in dom/locales/$lang/chrome/ allow detecting user locale
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-fingerprinting-locale,           |  Actual Points:
  TorBrowserTeam201908                           |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by gk):

 Looks good. I wonder whether the ServiceWorker `ReportToAllClients()`
 messages are detectable from web content actually. Have we ruled that out?
 (while not being enabled in ESR 68 it will be for mobile IIRC).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30683#comment:15>
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